@article {6683, title = {Fishery discards do not compensate natural prey shortage in Northern gannets from the English Channel}, journal = {Biological Conservation}, volume = {236}, year = {2019}, month = {Jan-08-2019}, pages = {375 - 384}, issn = {00063207}, doi = {10.1016/j.biocon.2019.05.040}, url = {https://www.sciencedirect.com/science/article/abs/pii/S0006320718310930}, author = {Le Bot, Tangi and Lescro{\"e}l, Am{\'e}lie and Fort, J{\'e}r{\^o}me and Clara P{\'e}ron and Gimenez, Olivier and Provost, Pascal and Gr{\'e}millet, David} } @article {6664, title = {Patterns of at-sea behaviour at a hybrid zone between two threatened seabirds}, journal = {Scientific Reports}, volume = {9}, year = {2019}, month = {Jan-12-2019}, doi = {10.1038/s41598-019-51188-8}, url = {http://www.nature.com/articles/s41598-019-51188-8}, author = {Austin, Rhiannon E. and Wynn, Russell B. and Votier, Stephen C. and Trueman, Clive and McMinn, Miguel and Rodr{\'\i}guez, Ana and Suberg, Lavinia and Maurice, Louise and Newton, Jason and Genovart, Meritxell and Clara P{\'e}ron and Gr{\'e}millet, David and Guilford, Tim} } @article {6798, title = {Short-term prey field lability constrains individual specialisation in resource selection and foraging site fidelity in a marine predator}, journal = {Ecology Letters}, volume = {21}, year = {2018}, month = {07-2018}, pages = {1043 - 1054}, abstract = {Spatio-temporally stable prey distributions coupled with individual foraging site fidelity are predicted to favour individual resource specialisation. Conversely, predators coping with dynamic prey distributions should diversify their individual diet and/or shift foraging areas to increase net intake. We studied individual specialisation in Scopoli{\textquoteright}s shearwaters (Calonectris diomedea) from the highly dynamic Western Mediterranean, using daily prey distributions together with resource selection, site fidelity and trophic-level analyses. As hypothesised, we found dietary diversification, low foraging site fidelity and almost no individual specialisation in resource selection. Crucially, shearwaters switched daily foraging tactics, selecting areas with contrasting prey of varying trophic levels. Overall, information use and plastic resource selection of individuals with reduced short-term foraging site fidelity allow predators to overcome prey field lability. Our study is an essential step towards a better understanding of individual responses to enhanced environmental stochasticity driven by global changes, and of pathways favouring population persistence.}, doi = {10.1111/ele.2018.21.issue-710.1111/ele.12970}, url = {http://onlinelibrary.wiley.com/wol1/doi/10.1111/ele.12970}, author = {Courbin, Nicolas and Besnard, Aur{\'e}lien and Clara P{\'e}ron and Saraux, Claire and Fort, J{\'e}r{\^o}me and Perret, Samuel and Tornos, J{\'e}r{\'e}my and Gr{\'e}millet, David} } @article {6797, title = {Testing the transferability of track-based habitat models for sound marine spatial planning}, journal = {Diversity and Distribution}, volume = {24}, year = {2018}, month = {12/2018}, pages = {1772-1787}, abstract = {Aim

Species distribution models (SDMs) are statistical tools aiming at mapping and predicting species distributions across landscapes. Data acquisition being limited in space and time, SDM are commonly used to predict species distribution in unsampled areas or years, with the expectation that modelled habitat{\textendash}species relationships will hold across spatial or temporal contexts (i.e., model transferability). This key aspect of habitat modelling has major implications for spatial management, yet it has received limited attention, especially in the dynamic marine realm. Our aims were to test geographical and temporal habitat model transferability and to make recommendations for future population-scale habitat modelling.


Two contrasted regions of the North Western Mediterranean Sea: the cold and productive waters of the Gulf of Lion, and the warm and oligotrophic waters of Corsica.


We GPS-tracked 189 Scopoli{\textquoteright}s shearwaters, Calonectris diomedea, at four breeding sites during the chick-rearing period in 2011 and 2012 (418 foraging trips), and analysed their fine-scale foraging behaviour. We then built colony-specific habitat models (GAMMs) to test SDM geographical and temporal transferability and investigated the effect of extrinsic (environmental extrapolation) and intrinsic (trip characteristics) factors on transferability.


Scopoli{\textquoteright}s shearwaters from our four study sites had comparable foraging strategies (as assessed from trip characteristics and isotopic diet tracers). Despite such similarities, SDMs revealed colony-specific habitat associations. Geographical and temporal model transferability was better within than between regions.

Main conclusions

Crucially, our study illustrates how habitat{\textendash}species relationships can vary between colonies located \<200\ km apart, and underlines the effect of spatio-temporal extrapolation in habitat modelling. We therefore warn that defining adequate spatial scales for model predictions is critical to sound marine spatial planning and conservation.}, keywords = {biologging, habitat modelling; transferability;central place foragers}, doi = {10.1111/ddi.12832}, url = {https://onlinelibrary.wiley.com/doi/full/10.1111/ddi.12832}, author = {Clara P{\'e}ron and Authier, Matthieu and Gr{\'e}millet, David} } @article {3659, title = {{Individual repeatability of foraging behaviour in a marine predator, the great cormorant, Phalacrocorax carbo}}, journal = {Animal Behaviour}, volume = {103}, year = {2015}, pages = {83{\textendash}90}, abstract = {Intrapopulation variability, especially individual foraging specialization, has been investigated in many species. Nevertheless, the repeatability of foraging behaviour remains poorly understood. In particular, whether individuals differ in their respective degrees of repeatability still remains to be determined. Here, we estimated foraging behaviour repeatability in the great cormorant, at both the population and the individual levels, and assessed the effect of repeatability on individual foraging performance. At the population level, we found that some foraging variables were more repeatable (e.g. departure angle and trip duration) than others (e.g. time spent underwater per trip). At the individual level, we found differences in the degree of repeatability for each foraging variable, highlighting the presence of both highly flexible and highly consistent individuals in the population. The effect of repeatability on individual performance depended on the considered timescale: individual-level repeatability of time spent underwater per dive was negatively related to foraging efficiency while individual-level repeatability of time spent underwater per trip was positively related to foraging efficiency. Overall, our study demonstrates the importance of studying repeatability at the individual level and shows how both flexibility and consistency in animal behaviour shape their ability to extract energy from the environment.}, keywords = {behavioural consistency, foraging efficiency, individual flexibility, individual repeatability, piscivorous bird}, issn = {00033472}, doi = {10.1016/j.anbehav.2015.02.008}, url = {http://www.sciencedirect.com/science/article/pii/S0003347215000652}, author = {Potier, Simon and Carpentier, A and Gr{\'e}millet, David and Leroy, Boris and Lescro{\"e}l, Am{\'e}lie} }